皮皮学，免费搜题
登录
搜题
【单选题】
( )describes how to interact with the information system to accomplish specific tasks.A.
System specification
B.
Program
C.
User guide
D.
System document
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】在图 1 所示电路中,已知 U S =10V , I S =2A ,外电路电阻 R =10 W ,图 1- ( a )中电压源及图 1- ( b )中电压源均是 功率。
A.
发出
B.
吸收
C.
无法确定
【单选题】Haven't we told you that you _______ have 25 dollars if you have fixed our computer?
A.
shall
B.
would
C.
should
D.
could
【简答题】•What differences between senior high school and university have you noticed since you have entered our school? Have these differences caused any pressure on you? •What pressures have you felt during...
【简答题】2-21 电路如题图 2-21 所示, U S = 30 V , I S = 1A 。试用节点电压法求各节点电压及各电源发出的功率。
【简答题】2 如下图所示电路, i 1 =3A, u 2 =4V 。求电压 u,u s 和电阻 R, 并求电源、受控源发出的功率。
相关题目：
参考解析：
知识点：
题目纠错 0
发布
